A review of interproximal wear grooves on fossil hominin teeth with new evidence from Olduvai Gorge.

@article{Ungar2001ARO,
  title={A review of interproximal wear grooves on fossil hominin teeth with new evidence from Olduvai Gorge.},
  author={Peter S Ungar and Frederick E Grine and Mark Franklyn Teaford and Alejandro P{\'e}rez-P{\'e}rez},
  journal={Archives of oral biology},
  year={2001},
  volume={46 4},
  pages={
          285-92
        }
}
Interproximal (approximal) grooves at the cementum-enamel junction of premolar and molar teeth have been observed in a broad range of human ancestors and related extinct species from 1.84 million years ago to the present. Many hypotheses have been presented to explain the aetiology of these grooves, though their form and positioning are most consistent with tooth-picking behaviours. This paper reviews occurrences of interproximal grooves in the cheek teeth of modern and fossil humans, evaluates… CONTINUE READING

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